marimo-base

library0.23.9pypypi✓ verified 84d ago

marimo is a reactive Python notebook and app framework for reproducible, interactive computing. Current version 0.23.9 requires Python >=3.10. It is released frequently (multiple times per month) with an active development pace.

ai-ml devops

pip install marimo

INSTALL

IMPORT

SIG · MARIMO-BASE

marimo-base

ai-mlpythonv0.23.9

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

marimo

✓ import marimo

✗ from marimo_base import ...

Package is 'marimo' on PyPI, not 'marimo-base'.

Minimal reactive notebook with a single cell.

import marimo # Create a reactive notebook cell mo = marimo.App() @mo.cell def greet(name='World'): mo.md(f"Hello {name}!") # Launch the app if __name__ == "__main__": mo.run()

Debug

Known issues

breakingIn marimo 0.8+, the API changed from `marimo.notebook` to `marimo.App()`. Old code using `marimo.notebook` will raise an AttributeError.

fix

Replace `marimo.notebook()` with `marimo.App()`.

affects: <0.8

deprecatedThe `@mo.cell` decorator now requires `async` for cells that use `mo.ui` elements; sync cells without UI elements are still supported but may be deprecated in future.

fix

Add `async` to cell definition if using interactive UI elements: `async def my_cell():`

affects: >=0.18

gotchamarimo cells are reactive by default: all global variables are re-evaluated when any dependency changes. This can cause unexpected side effects if you mutate objects in place.

fix

Use `mo.ref()` to control reactivity or write pure functions.

affects: all

gotchaDo not use `marimo` in a Jupyter notebook; it is a standalone runtime. Cells and magic do not work in Jupyter.

fix

Run `marimo edit` to launch the marimo editor, not inside Jupyter.

affects: all

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'marimo_base'

The PyPI package is named 'marimo', not 'marimo-base'.

fix

Run `pip install marimo` and import as `import marimo`.

AttributeError: module 'marimo' has no attribute 'notebook'

The `marimo.notebook` function was removed in v0.8.

fix

Use `app = marimo.App()` and `app.run()`.

TypeError: 'App' object is not callable

Calling `marimo.App()` as a function without parentheses or using `marimo.App` incorrectly.

fix

Instantiate with parentheses: `app = marimo.App()`

Upgrade

Version history

0.23.9latest on PyPI · released Jun 4, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

4 hits · last 30 days

node

Resources

No resource links recorded.